Molecular add-on particles won't interact with a non-animated rigid body
It seems like some cache conflict.


Notes:

The glass jar should be Physics Properties &gt; Rigid Body &gt; Collision &gt; type Mesh (not Convex because it should behave like filled object, but it didn't, hmm ...)
it is always better to Apply Scale (Ctrl+A) to avoid weird behaviour of boundaries
only make a difference if Substeps is changed from 4 to 1
(but changing it back to 4, it explodes in some point of anim, because of some previously cached data, that I'm not able clear from file even I change amount of particles, that always helped in crisis like this.


Bake to Keyframes
What I can recommend is to select glass jar and Bake to Keyframes (if you played all animation so rigid body was cached, baked avoids caching RB. Since than I don't have an issue with molecules.
Also it solves cube (that is pushing the glass) to affect particles.

After bake you can use Decimate function (with cursor hovering in Graph Editor) to simplify F-curve.